Non-functional. Please debug

applications/plugins/namechanger/application.fam

@@ -0,0 +1,13 @@
+App(
+    appid="NameChanger",
+    name="Name Changer",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="namechanger_app",
+    cdefines=["APP_NAMECHANGER"],
+    requires=["gui","storage"],
+    stack_size=2 * 1024,
+    order=90,
+    fap_icon="namechanger_10px.png",
+    fap_category="Tools",
+	fap_icon_assets="icons",
+)

applications/plugins/namechanger/namechanger.c

@@ -0,0 +1,162 @@
+#include "namechanger.h"
+#include "scenes/namechanger_scene.h"
+
+#include <toolbox/path.h>
+#include <flipper_format/flipper_format.h>
+
+bool namechanger_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    NameChanger* namechanger = context;
+    return scene_manager_handle_custom_event(namechanger->scene_manager, event);
+}
+
+bool namechanger_back_event_callback(void* context) {
+    furi_assert(context);
+    NameChanger* namechanger = context;
+    return scene_manager_handle_back_event(namechanger->scene_manager);
+}
+
+NameChanger* namechanger_alloc() {
+    NameChanger* namechanger = malloc(sizeof(NameChanger));
+
+    namechanger->scene_manager = scene_manager_alloc(&namechanger_scene_handlers, namechanger);
+
+    namechanger->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(namechanger->view_dispatcher);
+    view_dispatcher_set_event_callback_context(namechanger->view_dispatcher, namechanger);
+    view_dispatcher_set_custom_event_callback(
+        namechanger->view_dispatcher, namechanger_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        namechanger->view_dispatcher, namechanger_back_event_callback);
+
+    namechanger->gui = furi_record_open(RECORD_GUI);
+    namechanger->storage = furi_record_open(RECORD_STORAGE);
+
+    namechanger->submenu = submenu_alloc();
+    view_dispatcher_add_view(
+        namechanger->view_dispatcher,
+        NameChangerViewSubmenu,
+        submenu_get_view(namechanger->submenu));
+
+    namechanger->text_input = text_input_alloc();
+    view_dispatcher_add_view(
+        namechanger->view_dispatcher,
+        NameChangerViewTextInput,
+        text_input_get_view(namechanger->text_input));
+
+    namechanger->popup = popup_alloc();
+    view_dispatcher_add_view(
+        namechanger->view_dispatcher, NameChangerViewPopup, popup_get_view(namechanger->popup));
+
+    namechanger->widget = widget_alloc();
+    view_dispatcher_add_view(
+        namechanger->view_dispatcher, NameChangerViewWidget, widget_get_view(namechanger->widget));
+
+    return namechanger;
+}
+
+void namechanger_free(NameChanger* namechanger) {
+    furi_assert(namechanger);
+
+    view_dispatcher_remove_view(namechanger->view_dispatcher, NameChangerViewWidget);
+    widget_free(namechanger->widget);
+    view_dispatcher_remove_view(namechanger->view_dispatcher, NameChangerViewPopup);
+    popup_free(namechanger->popup);
+
+    view_dispatcher_remove_view(namechanger->view_dispatcher, NameChangerViewTextInput);
+    text_input_free(namechanger->text_input);
+
+    view_dispatcher_remove_view(namechanger->view_dispatcher, NameChangerViewSubmenu);
+    submenu_free(namechanger->submenu);
+
+    view_dispatcher_free(namechanger->view_dispatcher);
+    scene_manager_free(namechanger->scene_manager);
+
+    furi_record_close(RECORD_STORAGE);
+
+    furi_record_close(RECORD_GUI);
+
+    free(namechanger);
+}
+
+void namechanger_text_store_set(NameChanger* namechanger, const char* text, ...) {
+    va_list args;
+    va_start(args, text);
+
+    vsnprintf(namechanger->text_store, NAMECHANGER_TEXT_STORE_SIZE, text, args);
+
+    va_end(args);
+}
+
+int32_t namechanger_app() {
+    NameChanger* namechanger = namechanger_alloc();
+
+    view_dispatcher_attach_to_gui(
+        namechanger->view_dispatcher, namechanger->gui, ViewDispatcherTypeFullscreen);
+    scene_manager_next_scene(namechanger->scene_manager, NameChangerSceneStart);
+
+    view_dispatcher_run(namechanger->view_dispatcher);
+
+    namechanger_free(namechanger);
+    return 0;
+}
+
+bool namechanger_name_write(NameChanger* namechanger, char* name) {
+    FuriString* file_path = furi_string_alloc();
+    furi_string_set(file_path, "/ext/dolphin/name.txt");
+
+    bool result = false;
+
+    //If name is not "eraseerase" (set by Revert) then write name to file
+    //otherwise, remove name.txt
+
+    if(strcmp(name, "eraseerase") != 0) {
+        //save
+        FlipperFormat* file = flipper_format_file_alloc(namechanger->storage);
+
+        do {
+            // Open file for write
+            if(!flipper_format_file_open_always(file, furi_string_get_cstr(file_path))) {
+                break;
+            }
+
+            // Write header
+            if(!flipper_format_write_header_cstr(file, NAMECHANGER_HEADER, 1)) {
+                break;
+            }
+
+            // Write comments
+            if(!flipper_format_write_comment_cstr(
+                   file, "Changing the value below will change your FlipperZero device name.")) {
+                break;
+            }
+
+            if(!flipper_format_write_comment_cstr(
+                   file,
+                   "Note: This is limited to 8 characters using the following: a-z, A-Z, 0-9, and _")) {
+                break;
+            }
+
+            if(!flipper_format_write_comment_cstr(
+                   file, "It cannot contain any other characters.")) {
+                break;
+            }
+
+            if(!flipper_format_write_string_cstr(file, "Name", name)) {
+                break;
+            }
+
+            result = true;
+        } while(false);
+
+        flipper_format_free(file);
+
+        if(!result) {
+            FURI_LOG_E(TAG, "Cannot save name file.");
+        }
+    } else {
+        result = storage_simply_remove(namechanger->storage, furi_string_get_cstr(file_path));
+    }
+
+    return result;
+}

applications/plugins/namechanger/namechanger.h

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <furi_hal.h>
+#include <gui/gui.h>
+#include <gui/view.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+#include <storage/storage.h>
+
+#include <NameChanger_icons.h>
+
+#include <gui/modules/submenu.h>
+#include <gui/modules/popup.h>
+#include <gui/modules/text_input.h>
+#include <gui/modules/widget.h>
+
+#include "namechanger_custom_event.h"
+#include "scenes/namechanger_scene.h"
+
+#define NAMECHANGER_TEXT_STORE_SIZE 9
+#define NAMECHANGER_HEADER "Flipper Name File"
+
+#define TAG "NameChanger"
+
+typedef struct {
+    SceneManager* scene_manager;
+    ViewDispatcher* view_dispatcher;
+
+    Gui* gui;
+    Storage* storage;
+
+    char text_store[NAMECHANGER_TEXT_STORE_SIZE + 1];
+
+    Submenu* submenu;
+    TextInput* text_input;
+    Popup* popup;
+    Widget* widget;
+} NameChanger;
+
+typedef enum {
+    NameChangerViewSubmenu,
+    NameChangerViewTextInput,
+    NameChangerViewPopup,
+    NameChangerViewWidget,
+} NameChangerView;
+
+bool namechanger_make_app_folder(NameChanger* namechanger);
+bool namechanger_name_write(NameChanger* namechanger, char* name);
+void namechanger_text_store_set(NameChanger* namechanger, const char* text, ...);

applications/plugins/namechanger/namechanger_custom_event.h

@@ -0,0 +1,6 @@
+#pragma once
+
+enum NameChangerCustomEvent {
+    NameChangerCustomEventBack,
+    NameChangerCustomEventTextEditResult,
+};

applications/plugins/namechanger/scenes/namechanger_scene.c

@@ -0,0 +1,30 @@
+#include "namechanger_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const namechanger_on_enter_handlers[])(void*) = {
+#include "namechanger_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const namechanger_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "namechanger_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const namechanger_on_exit_handlers[])(void* context) = {
+#include "namechanger_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers namechanger_scene_handlers = {
+    .on_enter_handlers = namechanger_on_enter_handlers,
+    .on_event_handlers = namechanger_on_event_handlers,
+    .on_exit_handlers = namechanger_on_exit_handlers,
+    .scene_num = NameChangerSceneNum,
+};

applications/plugins/namechanger/scenes/namechanger_scene.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) NameChangerScene##id,
+typedef enum {
+#include "namechanger_scene_config.h"
+    NameChangerSceneNum,
+} NameChangerScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers namechanger_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "namechanger_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "namechanger_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "namechanger_scene_config.h"
+#undef ADD_SCENE

applications/plugins/namechanger/scenes/namechanger_scene_change.c

@@ -0,0 +1,56 @@
+#include "../namechanger.h"
+
+static void namechanger_scene_change_text_input_callback(void* context) {
+    NameChanger* namechanger = context;
+
+    view_dispatcher_send_custom_event(
+        namechanger->view_dispatcher, NameChangerCustomEventTextEditResult);
+}
+
+void namechanger_scene_change_on_enter(void* context) {
+    NameChanger* namechanger = context;
+    TextInput* text_input = namechanger->text_input;
+
+    namechanger_text_store_set(namechanger, "%s", furi_hal_version_get_name_ptr());
+
+    text_input_set_header_text(text_input, "Set Flipper Name");
+
+    text_input_set_result_callback(
+        text_input,
+        namechanger_scene_change_text_input_callback,
+        namechanger,
+        namechanger->text_store,
+        NAMECHANGER_TEXT_STORE_SIZE,
+        true);
+
+    view_dispatcher_switch_to_view(namechanger->view_dispatcher, NameChangerViewTextInput);
+}
+
+bool namechanger_scene_change_on_event(void* context, SceneManagerEvent event) {
+    NameChanger* namechanger = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == NameChangerCustomEventTextEditResult) {
+            if(namechanger_name_write(namechanger, namechanger->text_store)) {
+                scene_manager_next_scene(
+                    namechanger->scene_manager, NameChangerSceneChangeSuccess);
+            } else {
+                scene_manager_search_and_switch_to_previous_scene(
+                    namechanger->scene_manager, NameChangerSceneStart);
+            }
+        } else {
+            scene_manager_search_and_switch_to_previous_scene(
+                namechanger->scene_manager, NameChangerSceneStart);
+        }
+    }
+    return consumed;
+}
+
+void namechanger_scene_change_on_exit(void* context) {
+    NameChanger* namechanger = context;
+    TextInput* text_input = namechanger->text_input;
+
+    text_input_reset(text_input);
+}

applications/plugins/namechanger/scenes/namechanger_scene_change_success.c

@@ -0,0 +1,51 @@
+#include "../namechanger.h"
+
+static void namechanger_scene_change_success_popup_callback(void* context) {
+    NameChanger* namechanger = context;
+    view_dispatcher_send_custom_event(namechanger->view_dispatcher, NameChangerCustomEventBack);
+}
+
+void namechanger_scene_change_success_on_enter(void* context) {
+    NameChanger* namechanger = context;
+    Popup* popup = namechanger->popup;
+
+    popup_set_icon(popup, 32, 5, &I_DolphinNice_96x59);
+    popup_set_header(popup, "Saved!", 5, 5, AlignLeft, AlignTop);
+    popup_set_text(popup, "Rebooting...", 5, 17, AlignLeft, AlignTop);
+
+    popup_set_callback(popup, namechanger_scene_change_success_popup_callback);
+    popup_set_context(popup, namechanger);
+    popup_set_timeout(popup, 5000);
+    popup_enable_timeout(popup);
+
+    view_dispatcher_switch_to_view(namechanger->view_dispatcher, NameChangerViewPopup);
+}
+
+bool namechanger_scene_change_success_on_event(void* context, SceneManagerEvent event) {
+    NameChanger* namechanger = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == NameChangerCustomEventBack) {
+            scene_manager_search_and_switch_to_previous_scene(
+                namechanger->scene_manager, NameChangerSceneChange);
+        }
+    }
+
+    return consumed;
+}
+
+void namechanger_scene_change_success_on_exit(void* context) {
+    NameChanger* namechanger = context;
+    Popup* popup = namechanger->popup;
+
+    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
+    popup_set_icon(popup, 0, 0, NULL);
+
+    popup_disable_timeout(popup);
+    popup_set_context(popup, NULL);
+    popup_set_callback(popup, NULL);
+
+    furi_hal_power_reset();
+}

applications/plugins/namechanger/scenes/namechanger_scene_config.h

@@ -0,0 +1,5 @@
+ADD_SCENE(namechanger, start, Start)
+ADD_SCENE(namechanger, change, Change)
+ADD_SCENE(namechanger, change_success, ChangeSuccess)
+ADD_SCENE(namechanger, revert, Revert)
+ADD_SCENE(namechanger, revert_success, RevertSuccess)

applications/plugins/namechanger/scenes/namechanger_scene_revert.c

@@ -0,0 +1,54 @@
+#include "../namechanger.h"
+
+static void
+    namechanger_scene_revert_widget_callback(GuiButtonType result, InputType type, void* context) {
+    NameChanger* namechanger = context;
+    if(type == InputTypeShort) {
+        view_dispatcher_send_custom_event(namechanger->view_dispatcher, result);
+    }
+}
+
+void namechanger_scene_revert_on_enter(void* context) {
+    NameChanger* namechanger = context;
+    Widget* widget = namechanger->widget;
+    widget_add_text_box_element(
+        widget, 0, 0, 128, 25, AlignCenter, AlignCenter, "\e#Revert Name?\e#", false);
+    widget_add_icon_element(widget, 48, 20, &I_MarioBlock);
+    widget_add_button_element(
+        widget, GuiButtonTypeLeft, "Cancel", namechanger_scene_revert_widget_callback, namechanger);
+    widget_add_button_element(
+        widget,
+        GuiButtonTypeRight,
+        "Revert",
+        namechanger_scene_revert_widget_callback,
+        namechanger);
+    view_dispatcher_switch_to_view(namechanger->view_dispatcher, NameChangerViewWidget);
+}
+
+bool namechanger_scene_revert_on_event(void* context, SceneManagerEvent event) {
+    NameChanger* namechanger = context;
+    bool consumed = false;
+    if(event.type == SceneManagerEventTypeBack) {
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == GuiButtonTypeRight) {
+            if(namechanger_name_write(namechanger, "eraseerase")) {
+                scene_manager_next_scene(
+                    namechanger->scene_manager, NameChangerSceneRevertSuccess);
+            } else {
+                scene_manager_search_and_switch_to_previous_scene(
+                    namechanger->scene_manager, NameChangerSceneStart);
+            }
+        } else if(event.event == GuiButtonTypeLeft) {
+            scene_manager_search_and_switch_to_previous_scene(
+                namechanger->scene_manager, NameChangerSceneStart);
+        }
+    }
+    return consumed;
+}
+
+void namechanger_scene_revert_on_exit(void* context) {
+    NameChanger* namechanger = context;
+    widget_reset(namechanger->widget);
+}

applications/plugins/namechanger/scenes/namechanger_scene_revert_success.c

@@ -0,0 +1,55 @@
+#include "../namechanger.h"
+
+static void namechanger_scene_revert_success_popup_callback(void* context) {
+    NameChanger* namechanger = context;
+    view_dispatcher_send_custom_event(namechanger->view_dispatcher, NameChangerCustomEventBack);
+}
+
+void namechanger_scene_revert_success_on_enter(void* context) {
+    NameChanger* namechanger = context;
+    Popup* popup = namechanger->popup;
+
+    popup_set_icon(popup, 0, 2, &I_DolphinMafia_115x62);
+    popup_set_header(popup, "Reverted!", 70, 5, AlignLeft, AlignTop);
+    popup_set_text(popup, "Rebooting...", 70, 16, AlignLeft, AlignTop);
+
+    popup_set_callback(popup, namechanger_scene_revert_success_popup_callback);
+    popup_set_context(popup, namechanger);
+    popup_set_timeout(popup, 5000);
+    popup_enable_timeout(popup);
+
+    view_dispatcher_switch_to_view(namechanger->view_dispatcher, NameChangerViewPopup);
+}
+
+bool namechanger_scene_revert_success_on_event(void* context, SceneManagerEvent event) {
+    NameChanger* namechanger = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeBack) {
+        consumed = true;
+        scene_manager_search_and_switch_to_previous_scene(
+            namechanger->scene_manager, NameChangerSceneStart);
+    } else if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == NameChangerCustomEventBack) {
+            scene_manager_search_and_switch_to_previous_scene(
+                namechanger->scene_manager, NameChangerSceneStart);
+        }
+    }
+
+    return consumed;
+}
+
+void namechanger_scene_revert_success_on_exit(void* context) {
+    NameChanger* namechanger = context;
+    Popup* popup = namechanger->popup;
+
+    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
+    popup_set_icon(popup, 0, 0, NULL);
+
+    popup_disable_timeout(popup);
+    popup_set_context(popup, NULL);
+    popup_set_callback(popup, NULL);
+
+    furi_hal_power_reset();
+}

applications/plugins/namechanger/scenes/namechanger_scene_start.c

@@ -0,0 +1,58 @@
+#include "../namechanger.h"
+
+enum SubmenuIndex {
+    SubmenuIndexChange,
+    SubmenuIndexRevert,
+};
+
+void namechanger_scene_start_submenu_callback(void* context, uint32_t index) {
+    NameChanger* namechanger = context;
+    view_dispatcher_send_custom_event(namechanger->view_dispatcher, index);
+}
+
+void namechanger_scene_start_on_enter(void* context) {
+    NameChanger* namechanger = context;
+    Submenu* submenu = namechanger->submenu;
+
+    submenu_add_item(
+        submenu,
+        "Change",
+        SubmenuIndexChange,
+        namechanger_scene_start_submenu_callback,
+        namechanger);
+
+    submenu_add_item(
+        submenu,
+        "Revert",
+        SubmenuIndexRevert,
+        namechanger_scene_start_submenu_callback,
+        namechanger);
+
+    submenu_set_selected_item(
+        submenu, scene_manager_get_scene_state(namechanger->scene_manager, NameChangerSceneStart));
+
+    view_dispatcher_switch_to_view(namechanger->view_dispatcher, NameChangerViewSubmenu);
+}
+
+bool namechanger_scene_start_on_event(void* context, SceneManagerEvent event) {
+    NameChanger* namechanger = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        scene_manager_set_scene_state(
+            namechanger->scene_manager, NameChangerSceneStart, event.event);
+        consumed = true;
+        if(event.event == SubmenuIndexChange) {
+            scene_manager_next_scene(namechanger->scene_manager, NameChangerSceneChange);
+        }
+        if(event.event == SubmenuIndexRevert) {
+            scene_manager_next_scene(namechanger->scene_manager, NameChangerSceneRevert);
+        }
+    }
+    return consumed;
+}
+
+void namechanger_scene_start_on_exit(void* context) {
+    NameChanger* namechanger = context;
+    submenu_reset(namechanger->submenu);
+}

applications/services/namechangersrv/application.fam

@@ -0,0 +1,7 @@
+App(
+    appid="namechangersrv",
+    apptype=FlipperAppType.STARTUP,
+    entry_point="namechanger_on_system_start",
+    requires=["storage"],
+    order=1000,
+)

applications/services/namechangersrv/namechangersrv.c

@@ -0,0 +1,160 @@
+#include "namechangersrv.h"
+#include "m-string.h"
+#include <toolbox/path.h>
+#include <flipper_format/flipper_format.h>
+
+void namechanger_on_system_start() {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+
+    FuriString* NAMEHEADER;
+    NAMEHEADER = furi_string_alloc_set("Flipper Name File");
+
+    FuriString* filepath;
+    filepath = furi_string_alloc_set("/ext/dolphin/name.txt");
+
+    bool result = false;
+
+    FuriString* data;
+    data = furi_string_alloc();
+
+    do {
+        if(!flipper_format_file_open_existing(file, furi_string_get_cstr(filepath))) {
+            break;
+        }
+
+        // header
+        uint32_t version;
+
+        if(!flipper_format_read_header(file, data, &version)) {
+            break;
+        }
+
+        if(furi_string_cmp_str(data, furi_string_get_cstr(NAMEHEADER)) != 0) {
+            break;
+        }
+
+        if(version != 1) {
+            break;
+        }
+
+        // get Name
+        if(!flipper_format_read_string(file, "Name", data)) {
+            break;
+        }
+
+        result = true;
+    } while(false);
+
+    flipper_format_free(file);
+
+    if(!result) {
+        //file not good - write new one
+        FlipperFormat* file = flipper_format_file_alloc(storage);
+
+        bool res = false;
+
+        do {
+            // Open file for write
+            if(!flipper_format_file_open_always(file, furi_string_get_cstr(filepath))) {
+                break;
+            }
+
+            // Write header
+            if(!flipper_format_write_header_cstr(file, furi_string_get_cstr(NAMEHEADER), 1)) {
+                break;
+            }
+
+            // Write comments
+            if(!flipper_format_write_comment_cstr(
+                   file, "Changing the value below will change your FlipperZero device name.")) {
+                break;
+            }
+
+            if(!flipper_format_write_comment_cstr(
+                   file,
+                   "Note: This is limited to 8 characters using the following: a-z, A-Z, 0-9, and _")) {
+                break;
+            }
+
+            if(!flipper_format_write_comment_cstr(
+                   file, "It can contain other characters but use at your own risk.")) {
+                break;
+            }
+
+            //Write name
+            if(!flipper_format_write_string_cstr(file, "Name", furi_hal_version_get_name_ptr())) {
+                break;
+            }
+
+            res = true;
+        } while(false);
+
+        flipper_format_free(file);
+
+        if(!res) {
+            FURI_LOG_E(TAG, "Save failed.");
+        }
+    } else {
+        if(!furi_string_size(data)) {
+            //Empty file - get default name and write to file.
+            FlipperFormat* file = flipper_format_file_alloc(storage);
+
+            bool res = false;
+
+            do {
+                // Open file for write
+                if(!flipper_format_file_open_always(file, furi_string_get_cstr(filepath))) {
+                    break;
+                }
+
+                // Write header
+                if(!flipper_format_write_header_cstr(file, furi_string_get_cstr(NAMEHEADER), 1)) {
+                    break;
+                }
+
+                // Write comments
+                if(!flipper_format_write_comment_cstr(
+                       file,
+                       "Changing the value below will change your FlipperZero device name.")) {
+                    break;
+                }
+
+                if(!flipper_format_write_comment_cstr(
+                       file,
+                       "Note: This is limited to 8 characters using the following: a-z, A-Z, 0-9, and _")) {
+                    break;
+                }
+
+                if(!flipper_format_write_comment_cstr(
+                       file, "It cannot contain any other characters.")) {
+                    break;
+                }
+
+                //Write name
+                if(!flipper_format_write_string_cstr(
+                       file, "Name", furi_hal_version_get_name_ptr())) {
+                    break;
+                }
+
+                res = true;
+            } while(false);
+
+            flipper_format_free(file);
+
+            if(!res) {
+                FURI_LOG_E(TAG, "Save failed.");
+            }
+        } else {
+            char newdata[9];
+            snprintf(newdata, 9, "%s", furi_string_get_cstr(data));
+            //set name from file
+            furi_hal_version_set_custom_name(newdata);
+        }
+    }
+
+    furi_string_free(data);
+
+    furi_string_free(filepath);
+    furi_record_close(RECORD_STORAGE);
+}

applications/services/namechangersrv/namechangersrv.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <furi_hal.h>
+#include <storage/storage.h>
+
+#define NAMECHANGER_TEXT_STORE_SIZE 9
+#define NAMECHANGER_HEADER "Flipper Name File"
+
+#define TAG "NameChangerSRV"